rooms were caught by surprise, so they were in these rooms with the water rising, like these death traps essentially. they smashed the windows and they were screaming for help. when you see someone suffering like that, who's, like, they're going to die if you don't do something, you don't think about it, you just go. >> reporter: i've seen the pictures of the aftermath and the devastation, and it looks like a bomb went off. >> it's awful. there's a side of you that is so fascinated by the science of these things and you are in awe of it. then, when you see the human misery part, it's a whole other aspect. it breaks your heart. it really does. >> reporter: he says he helped save as many as ten people, scott, and during the rescue, his friend badly gashed his leg on debris in the water. to save his leg, his friend had to be airlifted out. >> pelley: bill whitaker in our los angeles newsroom. bill, thank you. 11 million filipinos are affected. today, the united nations appealed for $300 million to help them. if you'd like to help, there's information on our web site, cbsnews.com.